Welcome to your MEO Class 4 - General Test 3
Click Next to Start your Test
1
The conical steel or composition cone installed on a propeller, known as a fairwater cone, provides which of the following benefits?
2
An axial piston pump differs from a radial piston pump, as the pistons of an axial piston pump are positioned _________.
3
An important consideration in selecting a lubricating oil for use in a refrigeration compressor is for the oil to ____________.
4
Positive displacement, helical gear pumps are well suited for pumping oil because
5
The by-products of oxidation, as a result of water contamination of hydraulic oil, are generally ____________.
6
Personnel working with refrigeration systems and subject to the exposure of refrigerants should wear _______________.
7
Which of the main shaft segments listed below, that are connected with the main engine, are coupled to the tail shaft flange?
8
The charging of a refrigerating system should be carried out by adding _____________.
9
The heat required to change a substance from a solid to a liquid while at its freezing temperature, is known as the latent heat of _____________.
10
Fabric type packing, such as flax or hemp, is best suited for _____________.
11
One characteristic of a lubricating oil adversely affecting the results of centrifuging is ____________.
12
If the intercooler relief valve lifts while an air compressor is operating under load, you should check for ____
13
For carry out major work in tank –
14
The purpose of the programmed purge cycle on an automatically fired auxiliary boiler is to
15
With reference to a vessel's structural integrity, the most significant characteristic of a cryogenic liquid is its ______________.
16
The only means of removing the latent heat of condensation from a refrigerant in the normal refrigeration cycle is by ________.
17
The presence of scale and dirt on the saltwater side of lube oil cooler is usually indicated by ___________.
18
The designation "schedule 80 extra strong " refers to ____________.
19
Which of the devices listed prevents water from entering a ship's hull via the propulsion shaft?
20
Tapping threads into a blind hole should be finished by using a ______
21
Which of the following describes the purpose of a striker or doubler plate?
22
In reference to air conditioning, when air attains the maximum amount of moisture it can hold at a specific temperature, it is said to be _____________.
23
Short cycling of a refrigeration compressor refers to _____________.
24
In a shell-and-tube type hydraulic fluid cooler, the amount of heat transferred from the hydraulic fluid to the cooling water depends upon ________________.
25
Which of the materials listed is used as the dynamic seal material on mechanical seals installed on most centrifugal pumps used in water service?
26
The ability of a metal to be hammered, or rolled out is called its ___________.
27
Evaporator pressure testing in
28
Which of the following statements represents the proper relative direction of flow through a globe valve?
29
A one ton air conditioning system has which of the listed operating characteristics?
30
Heavy soot accumulations in an auxiliary boiler could be caused by _____
31
The pressure produced within the oil wedge of a rotating journal is ____.
32
The usual number of single-acting pistons used in a variable stroke axial-piston pump used for steering gears is _____________.
33
The factors that determine the service life of packing in a pump will include which of the following conditions?
34
Which of the following statements represents the main difference between a stuffing box gland and a mechanical seal for sealing the shaft of a centrifugal pump?
35
Which of the listed problems is occurring if a coil type high pressure evaporator constantly requires an increase in the coil steam pressure in order to maintain capacity?
36
A portion of the cargo of an LNG carrier boils off during each voyage. How the cargo boils off is normally handled?
37
The emergency bilge suction valve is typically used _____________.
38
When using a handheld hacksaw, you should apply pressure only on the forward stroke ____________.
39
Increasing the rotational speed of a cargo pump the pump flow rate will:
40
A leaking suction valve in the second stage of a two stage, high pressure, air compressor can cause excessively high ________________.
41
Distilled water from an evaporator may be discharged into a potable water tank
42
PLATE type heat exchanger is preferred for following advantage
43
In Vessel construction, beam brackets are triangular plates joining the deck beam to a
44
The cylinders and intercoolers of most low pressure air compressors are cooled by _
45
Latent heat can be defined as the heat which must be added to a substance in order to change it from a
46
The ambient heat in an engine room which is identified by only a change in temperature is known as
47
Piping cross-sections over 30 cm in diameter are sized by the __________.
48
It is desirable for an auxiliary boiler safety valve to pop open and reseat quickly to
49
Which of the following problems occurring in a hydraulic system can be caused by the use of an oil having a viscosity lower than specified?
50
Boiler water level control, controlling swell and shrink of boiler with
